<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">商品管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"  clearable @clear="getGoodsList"
            class="input-with-select"
          >
            <!-- <el-select v-model="value" placeholder="请选择">
              <el-option
                v-for="item in options"
                :key="item.value"
                :label="item.label"
                :value="item.value"
              >
              </el-option>
            </el-select> -->
            <!-- <el-select
              v-model="select"
              slot="prepend"
              placeholder="请选择"
              style="width: 100px"
            >
              <el-option
                v-for="(item, i) in options"
                :label="item.label"
                :value="item.value"
                :key="i"
              ></el-option>
            </el-select> -->
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 商品列表区 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight"  width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time"  width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <!--  -->
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini" @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total" background
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      select: '',
      // options: [
      //   {
      //     value: '1',
      //     label: '商品名称'
      //   },
      //   {
      //     value: '2',
      //     label: '商品价格'
      //   },
      //   {
      //     value: '3',
      //     label: '商品重量'
      //   },
      //   {
      //     value: '4',
      //     label: '创建时间'
      //   }
      // ],
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      total: 0,
      goodsList: []
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) return this.$message.error('获取商品数据失败！')
      // console.log(res.data)
      this.total = res.data.total
      res.data.goods.forEach(item => {
        item.add_time = this.formatTime(item.add_time)
      })

      this.goodsList = res.data.goods
    },
    // 监听 pageSize 改变的事件
    handleSizeChange(newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听 当前页码值 改变的事件
    handleCurrentChange(newPage) {
      //   console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 时间戳转字符串
    add0(m) {
      return m < 10 ? '0' + m : m
    },
    formatTime(shijianchuo) {
      // shijianchuo是整数，否则要parseInt转换
      // eslint-disable-next-line vue/return-in-computed-property
      var time = new Date(shijianchuo)
      var y = time.getFullYear()
      var m = time.getMonth() + 1
      var d = time.getDate()
      var h = time.getHours()
      var mm = time.getMinutes()
      var s = time.getSeconds()
      return (
        y + '-' + this.add0(m) + '-' + this.add0(d) + ' ' + this.add0(h) + ':' +
        this.add0(mm) +
        ':' +
        this.add0(s)
      )
    },
    async removeById(id) {
      // 弹窗询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', { confirmButtonText: '确定', cancelButtonText: '取消', type: 'warning' }).catch(
        err => err)
      // .then( () => { this.$message({ type: 'success', message: '删除成功!' }) }).catch(() => { this.$message({ type: 'info', message: '已取消删除' }) })
      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消删除，则返回值为字符串 cancel
      if (confirmResult !== 'confirm') { return this.$message.info('已取消删除') }
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) return this.$message.error('删除商品失败！')
      this.$message.success('删除商品成功！')
      this.getGoodsList()
    },
    goAddPage() {
      this.$router.push('/goods/add')
    }
  },
  computed: {
  }
}
</script>

<style lang="less" scoped>
</style>
